Improvement in ladders



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N'PETERS. PHoTo-LITHOGMPNER. WASHINGTON. D C.

@aient @wird JOHN HUGHES, OF NEW BRNE, NORTH CAROLINA.

Latters'Patent No. 108,483, dated October 18, 1870.

IMPROVEMENT IN LADDERS.

The Schedule referred to in these Letters Patent and making part 0fthe-Same- Beit known vthat I, JOHN Hccnes, oflew Berne, in the countyof'Craven and State of North Carolina, have invented av new and valuableImprovementin Ladders; and I do hereby declare that the following ,is ahvfull, clear, and exact description ot" the construction 'and operationof the same, reference being'had to the annexed drawing making a part ofthis spe-oif'icatiolnnand tothe letters and figures of reference' markedthereon.

Figure 1 of the' drawing is a front view of my in-r yention.

Figure 2 is a central vertical section of the same.

My invention has relation-to ladders, and consists in passing overpnlleys, bearing in the side bars thereof, endless ropes or chains forthe attachment of carriages or hooks, whereby weights maybe elevated orlowered.

The letter A of the drawing designates the ladder, consisting of thesidc-bars B B and the rungs C C.

Grooves n. n are made on the inside of each side bar, beth in front andin rear ot' the rungs.

D I) are the pulleys, seated in recesses in the side bars, one at eachend, or sometimes, as D', at an intermediate point, when it is notnecessary that the cnd- `less. chain should be carried beyond thispoint.

e' c represent endless chains, or ropes, passing over the pulleys I) D,and in the grooves n n in tbc side bars.

H H are transverse horizontal arms, of metal or wood, attached to theropes e c, andvextending across from one side of the ladder to theother.

The ends of each arm H extend within the grooves a n,and the arm isdesigned to serve as a brace to keep the ropes in proper position, andas a rod for the attachment of the carriage or hook.

In the drawing, the opposite pulleys are shown as being rigidlyconnected by a bar, d', designed to serve falso as a rung.

This arrangement is adopted for convenience,in applying the power toboth endless 4ropes at the same time, in orderthat they may move inconcord.

It' the power is' applied only at the bottom of the ladder, as shown bythe position ot' the cran-k in the drawing, the upper pulleys may he.separate. -But a crank may be applied to the upper end as well, inwhieh'case the upper pulleys would necessarily be connected.-

It desired, a stationary sleeve maybe fit-ted over the bar d.

K K represent carriages attached tothe arms H H, so arranged thatweights may be placed thereon,

l whetl1e1"they be ascending or descendimf. These carriages may be maderemovable.. Sometimes I attach loops or books to thearms H Hto whicharticles which cannot be conveyed on the carriages may be secured.

\Vhat I claim asmyinyention, and desire. to secure by Letters Patent, is

1. -In combination, the ladder A with grooves n 11,.

the pulleys 1) I), braces H H, and endless ropes c e, as specified. i

2. In combination with a ladder with grooved side bars, the endlessropes e e, pulleys D D, and braces H 1I, the removable carriage K K, soarranged as to present a support for articles, 4whether ascending ordescending, in iront or `in rear of 'the ladder, as specified. i

In testimony that l claim thc above, I have hereunto subscribed my namein the presence of two witnesses.

JNO. HUGHES. Witnesses C. W. MCLEAN, J. A. HEnLER..

